Yeah, from my research on 2c-ef I only was able to seem to find correlates exactly with what you said, but reading on a thread on I believe either BL or Shroomery I read a post about someone having found and ingested some of this supposed synthesis. He seemed fairly adamant as to its legitimacy as being 2c-ef and not any of the other RC's that are more common.
I had reviewed that particular PiHKAL entry on erowid thinking that because no further documentation was given by Shulgin about the matter, one might come to presume that he never actually synthesized the chem. So then that leads me to think, if he did in fact ingest 2c-ef, that an experienced biochemist must have followed Shulgin's rough directions for synthesizing it from the PiHKAL and created his own batch.
After saying that, I'm not sure that I believe that a chemist would take the time to synthesize 2c-ef using rather rough directions instead of something whose method of synthesizing has been well practiced and documented. I'm personally leaning towards BS on the side of whoever posted that they had in fact consumed it.
